The Australian Computer Society (ACS) Robotics Special Interest Group (SIG) aims to bring together people from various backgrounds who are interested in...
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Paul L Nielsen
P.Nielsen@...
Sep 29, 1999 6:56 am
Hi Folks, I'm looking for a little advice on speed control for the stock cars. I recall Norbet gave us a talk on how to effectively carry this out. The system...
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Wherrett, Joshua
Joshua.Wherrett@...
Sep 29, 1999 7:31 am
Hi Paul, What you are referring to is Pulse Width Modulation (PWM), this is performed by adjusting the duty cycle (Time on / Time off) of your motors in order...
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Brett Lymn
blymn@...
Sep 29, 1999 7:34 am
... Nope, what you are trying to do is control loop theory. It sounds like you know your current speed and your desired speed. What you are aiming for is to...
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Michael Lucas +61 7 3...
lucas@...
Sep 29, 1999 7:37 am
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Aaron Dwyer
AaronD@...
Sep 29, 1999 7:48 am
... you'll have to build your own. andrew might have published a webpage about it. maybe?? but i suggest a mosfet h-bridge, that way you can make it as strong ...
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andrewm
andrewm@...
Sep 29, 1999 9:45 am
Hiya, PWM is the method that you use for varying power to the motor - NOT THE MOTOR SPEED. One of the other guys (Brett) mentioned the magic word CONTROL LOOP....
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andrewm
andrewm@...
Sep 29, 1999 10:33 am
Hiya, PWM is the method that you use for varying power to the motor - NOT THE MOTOR SPEED. One of the other guys (Brett) mentioned the magic word CONTROL LOOP....
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Gordon Wyeth
wyeth@...
Sep 29, 1999 10:45 pm
The acronym that Norbet used I'm sure would have been PID - meaning proportional-integral-derivative. The idea is like this: You set your required speed =>...
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Gordon Wyeth
wyeth@...
Sep 29, 1999 10:50 pm
... Um, actually, for a given load, the PWM value DOES set the motor speed. It categorically does NOT set motor power. Of course, for varying loads you need a...
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Chris Parker
cjparker@...
Sep 29, 1999 11:05 pm
Hi, Can anyone recommend some mosfets to use in an H-bridge? The motors I am using draw around 50Amps. Regards Chris Parker ... From: Aaron Dwyer...
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andrewm
andrewm@...
Sep 29, 1999 11:14 pm
Hiya, There are a few other things we need to know. What voltage are you using. How cheap do you want them How much space and support circuitry do you want. ...
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andrewm
andrewm@...
Sep 29, 1999 11:25 pm
Hiya, Sorry, I did not read the original message about the 10Kg machine and you allready blowing up a few and the real estate premium. 50 amps is do-able in a...
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Brett Lymn
blymn@...
Sep 30, 1999 12:12 am
... Wheee lots of control theory I had happily forgotten :-) One thing to note with adding the derivative is that it is very prone to noise - you can get very...
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Chris Parker
cjparker@...
Sep 30, 1999 12:20 am
Hi Andrewm, You have confused me with the original person who asked the question. I believe Aaron Dwyer asked the first question. I haven't blown anything up...
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Brett Lymn
blymn@...
Sep 30, 1999 12:24 am
... I used to use some excellent mosfets in a switch mode power supply I was making - they were very robust. I cannot for the life of me remember the...
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John Billingsley
johnbill@...
Sep 30, 1999 2:11 am
The seventh conference on Mechatronics and Machine Vision in Practice will be held in Hervey Bay September 19-21 (during the first week of the Olympics) There...
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Aaron Dwyer
AaronD@...
Oct 1, 1999 4:19 am
hi all the next robotics meeting will be on next tue the 5th of october. we will be watching a video of this years robocon and robosoccer that was on early...
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John Billingsley
johnbill@...
Oct 1, 1999 4:32 am
Could you please put a link under the heading Robotics conferences - calls for papers to http://www.m2vip.com (The hosting will hae been set up by Monday - in...
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Lana Conic
L.Conic@...
Oct 5, 1999 10:36 pm
Hi Could you please remove me from this listserver. Thanks. ... Regards Lana Lana Conic Project Officer (Health and Safety) Office of Human Resource...
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Gordon Wyeth
wyeth@...
Oct 22, 1999 3:30 am
The Department of Computer Science and Electrical Engineering at The University of Queensland is having its annual Open Day on Thursday, 28th October. Open Day...
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Tracy Lightfoot
T.Lightfoot@...
Oct 28, 1999 6:16 am
Hi there, MEMBER MEETINGS The next Member Meeting is on Tuesday 2nd November. We will be holding pre-competition tests and discussions, with the Sumo ring and ...
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andrewm
andrewm@...
Nov 9, 1999 4:22 am
Hiya all, This is a message to any of the people at the last monthly meeting who expressed interest in a "garage sale" I was planning on having. I wil prob....
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Wherrett, Joshua
Joshua.Wherrett@...
Nov 9, 1999 5:16 am
Ok andrewm, hit me with the treasure list Aarrrrgg Josh ... From: andrewm [mailto:andrewm@...] Sent: Tuesday, 9 November 1999 1:28 To:...
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Wherrett, Joshua
Joshua.Wherrett@...
Nov 9, 1999 5:18 am
S#!T Damn Mailing List, Sorry that was just for andrewm Josh ... From: Wherrett, Joshua [mailto:Joshua.Wherrett@...] Sent: Tuesday, 9 November...
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andrewm
andrewm@...
Nov 10, 1999 11:09 pm
Hiya, Lots of people have said "tell me what you got" so I will just post if to the robot list. Please express interest before sunday or I wont bother. mail me...
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Tracy Lightfoot
T.Lightfoot@...
Nov 19, 1999 3:55 am
RRRR CCCC Robot R R C RRRR C Challege R R C R R CCCC 1999 When: Saturday 27th March Where: Room 0.06 of Humanities building, Nathan...
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Tracy Lightfoot
T.Lightfoot@...
Nov 19, 1999 4:00 am
Hi there, Apparently "Robot Wars" - the big beat-em-up overseas robot competition - is on TV on Channel 9, Sunday 6.30pm. These are not true 'robots', as they...
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Carter John
John.Carter@...
Nov 19, 1999 4:33 am
Hi Tracy, I guess you mean 27 of November not march I should be there as a spectator John Carter Climate Impacts and Natural Resource Systems Resource Sciences...
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John Billingsley
johnbill@...
Nov 19, 1999 4:49 am
You can see how the lads from USQ got on when they flew their robot to the UK - unless they've been edited out! ... From: Tracy Lightfoot...
